Improvement in pumps



cock.

U STATES PATENT "OFFICE-.f

GEORGE E. MILLS, OF NEW YORK, N. Y.

IMPROVEMENT IN PUMPS.

Specification forming part of Letters Patent No. 48,826. dated July 18,1865.

To all whom it may concern:

Be it known that I, GEORGE E. MILLS, of the city, county, and State ofNew York, have invented certain new and useful Improvements inMining-Pumps; and the followingis a full, clear, andexact description ofthe same, reference being had to the accompanying drawings, making apart of this specification, in which- Figure 1 represents a sideelevation, showing a section through the top and bottom conecylinder andthe other necessary appliances for operating the pump. Fig. 2 shows adetached view ofthe piston-valve head. Fig. 3 shows an enlarged view ofpipe and man-hole to valve-seat. Fig. 4 shows the cone-shaped ends ofthe pump-cylinder with the air stop- 'Ihe object of my invention is tosupply a most powerful and etcient miningpump for keeping the shaftclear from water, to be operated at any depth that may be requisite by arod extending to it from the surface or top of the shaft, the waterbeing lifted out and discharged through one or more dischargingpipes bythe action of the air and water, as hereinafter described.

My invention consists in the mode or" attaching the guide-rods for thepiston of the upper head of the cylinder and packing-box, so that itwill swivel or turn in any position. The crank may be placed for workingit above at the surface of the earth, or where the water is elevated tobe discharged.

To enable others skilled in the art to make and use my invention, I willdescribe it more fully, referring to the drawings, and to the lettersmarked thereon.

For the purpose of raising to the surface and keeping deep mines freeot' the water, so as to be in a condition for working, it is oftennecessary to employ the most powerful steamengines and equally powerfulpumps, and from their construction and the manner in which and theamountof labor they are often required to perform it has been foundalmost impossible to keep them in working order for any great length oftime, and the consequence is that when the pumps fail or the valves getchoked or disarranged the water often accumulates, so as to stop thework of mining for many days, and when the apparatushas to be taken upfor repairs there is much labor, delay,

and expense attending it, and, furthermore, the discharge-pipes are veryliable to burst from the pressure of raising too large a column of waterin one body, there being no air distributed in the cylinder or pipe togive it any elasticity.

By my improvements, as hereinafter described, the pump is easily kept ingood working order, and a large low of water is effected by the powerapplied. l

I make a strong frame, A A, which I place in that portion of the minewhere the water concentrates. On the top of the frame A A is supportedthe pum p-cylinder B, which may be ot' any required dimensions, theends, both top and betteln, being enlarge/d cone-shaped, b b, so thatthe valve-head C, which is attached to the piston-rod D, willjustrelieve the pressure of its packing c c against the parallel sidesof the cylinder a a at the turning-point both of its upward and downwardstroke of the piston C, so that air may be let into the cylinder at thetop through the stop-cock d, which mixes with the water in thepump-cylinder B, forming bubbles, which rise with the water into thedischarge-pipes E E, thus rendering the water elastic, and by theirtendency upward help to carry up4 the current of water and take thegreat pressure off from the valve e e, and the lowerportion of thedischarge-pipeEand pumpcylinder B.

The suction-pipe F, placed underneath the cylinder B, I make large, soas to easily supply the cylinder with all of the water it will receive.In the suction-pipe F, and in the discharge-pipes-E E, I makeman-holesfff, in close proximity to the valve-seat g, for the purpose ofbeing able at any time by taking oft the cap or plate h to get at thevalves to keep them in good working order.

On the stuffing-box t' I t a ring or yoke, 7c, which supports theguide-rods m m on which the cross-head I slides, to which the rod g isattached that connects with and works the piston D, the rod G extendingto the crank or engine that works the pump, the yoke 7c being fittedonto the stuffing-box t', so that it will turn on it and bring theguide-rods and crosshead in any desired position.

Having thus fully described my invention, what; I claim as new, anddesire to secure by Letters Patent, is-

The mode of attaching guide-rod mm to the head of the pump-eylnder andstuffing-box k,

so that they will turn to allow the Gross-head I tobe Worked by a crankin any position, as set forth.

GEORGE E. MILLS.

Witnesses:

N. WILLIAM BUsTEED, ALEXANDER ALLEN.

